The new TOHO J4 is a 48 x 48 mm microprocessor-based digital temperature controller that has recently added features. The J4 has been designed to meet the needs of users seeking high performance on a small budget.
The device has one main PID relay (or SSR drive) output with two additional alarm relays and is intended for use in processing machines that require three relay outputs. One output starts the machine at a predetermined value, the main output controls the heater banks and the third output can be set to control a cooling system. This arrangement is suitable for plastic injection machines, gluing machines and other similar systems.
The unit can be programmed as a heat/cool controller with additional alarm. The heat/cool arrangement suitable for combustion equipment suppliers who require the modulation of motorised valves and gas throttle controls. Both main outputs are full self tuning PID control in both directions with the third output acting as an alarm. It includes an advanced self- and auto-tuning function and has a built-in timer to automatically switch off outputs or give an alarm after a required period of running time. This unit enters the market only marginally more expensive that the TOHO CN-40 controller - which has less features, and is reported to be a popular choice for such applications.
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